Centre vortex removal restores chiral symmetry

Trewartha, Daniel; Kamleh, Waseem; Leinweber, Derek B.

doi:10.1088/1361-6471/aa9443

Title: Centre vortex removal restores chiral symmetry

Journal Article · Wed Nov 15 00:00:00 EST 2017 · Journal of Physics. G, Nuclear and Particle Physics

DOI:https://doi.org/10.1088/1361-6471/aa9443· OSTI ID:1417839

^[1]; Kamleh, Waseem ^[2]; Leinweber, Derek B. ^[2]

Thomas Jefferson National Accelerator Facility (TJNAF), Newport News, VA (United States); Univ. of Adelaide (Australia)
Univ. of Adelaide (Australia)

The influence of centre vortices on dynamical chiral symmetry breaking is investigated through the light hadron spectrum on the lattice. Recent studies of the quark propagator and other quantities have provided evidence that centre vortices are the fundamental objects underpinning dynamical chiral symmetry breaking in SU(3) gauge theory. For the first time, we use the chiral overlap fermion action to study the low-lying hadron spectrum on lattice ensembles consisting of Monte Carlo, vortex-removed, and vortex-projected gauge fields. We find that gauge field configurations consisting solely of smoothed centre vortices are capable of reproducing all the salient features of the hadron spectrum, including dynamical chiral symmetry breaking. In conclusion, the hadron spectrum on vortex-removed fields shows clear signals of chiral symmetry restoration at light values of the bare quark mass, while at heavy masses the spectrum is consistent with a theory of weakly-interacting constituent quarks.

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Research Organization:: Thomas Jefferson National Accelerator Facility (TJNAF), Newport News, VA (United States)

Sponsoring Organization:: USDOE Office of Science (SC), Nuclear Physics (NP)

Grant/Contract Number:: DP120104627; LE120100181

OSTI ID:: 1417839

Report Number(s):: JLAB-THY-18-2625; DOE/OR/23177-4320; arXiv:1708.06789

Journal Information:: Journal of Physics. G, Nuclear and Particle Physics, Vol. 44, Issue 12; ISSN 0954-3899

Publisher:: IOP PublishingCopyright Statement

Country of Publication:: United States

Language:: English

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Cited by: 6 works

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Cited By (3)

Publicising Lattice Field Theory through Visualisation Biddle, James; Charvetto, Josh; Kamleh, Waseem arXiv https://doi.org/10.48550/arxiv.1903.08308	preprint	January 2019
Chiral Symmetry Breaking on the Lattice Faber, Manfried; Höllwieser, Roman arXiv https://doi.org/10.48550/arxiv.1908.09740	text	January 2019
Visualizations of Centre Vortex Structure in Lattice Simulations Biddle, James C.; Kamleh, Waseem; Leinweber, Derek B. arXiv https://doi.org/10.48550/arxiv.1903.07767	preprint	January 2019

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chiral symmetry
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